Moss can turn the narrow joints between pavers into a soft, green surface that suits a shaded, informal garden. To encourage it, give moss a suitable place to grow: clean, stable joints, limited foot traffic, moisture, and shade; then transplant moss or let nearby growth spread.
Moss is not a dependable replacement for every kind of joint filler. It grows best where conditions stay cool and damp, and it can struggle in hot sun, dry climates, or paths that see frequent use. Check that the pavers are stable and that water can drain away before you begin. Avoid encouraging moss on steps or other places where a slick surface could create a slip hazard.
What You’ll Need
- A hand brush or soft-bristled scrub brush
- A small hand tool for removing weeds and loose debris
- Clean water in a watering can or spray bottle
- Moss from a suitable source, if you are transplanting it
- A blunt tool or gloved fingers for pressing moss into joints
- Optional: a small amount of plain, finely sifted soil or compost for shallow gaps
Use moss already growing on your property when possible. If collecting it elsewhere, get permission and avoid taking it from protected natural areas. Different mosses suit different conditions, so moss from a similar shaded, damp spot is more likely to establish than a random variety. You can also skip collecting moss and let naturally occurring patches spread over time.
Step-by-Step
- Choose a suitable area. Look for joints that receive shade for much of the day and remain naturally damp without staying waterlogged. A north-facing path, a sheltered courtyard, or a spot beneath light tree cover may offer suitable conditions. Consider how the path is used: a decorative border or quiet garden path is more promising than a busy route. Do not encourage moss on sloping steps, slick ramps, or any surface where slipping would be dangerous.
- Check the pavers and drainage. Press gently on each paver. If one rocks or sinks, repair the bedding or joint before adding moss; movement can break up new growth. After rain or watering, notice whether water drains away or pools in the gaps. Moss likes steady moisture, but standing water and persistently muddy joints can encourage decay and make the path unpleasant to use. Correct drainage problems rather than trying to cover them with moss.
- Clear the joints carefully. Pull out weeds and remove leaves, loose grit, and accumulated debris. Brush the paver edges gently. Do not dig out sound joint material or scrape the gaps deeply just to create room for moss. The goal is a clean, stable surface, not an empty trench. If the joints contain loose sand, remove only what is needed for the moss to make contact with the surface below.
- Decide whether to add a little growing medium. Moss can attach to firm surfaces and does not need a deep bed of soil. For a shallow, bare joint, you may press in a thin layer of plain, fine soil or compost to help hold moisture. Keep it low enough that it does not spill over the pavers or wash away in rain. Avoid filling a deep joint with loose material; stabilize or refill that gap appropriately first, then use moss only where it can remain in place.
- Prepare the moss. Use small, healthy pieces that are similar to the conditions in your path. Gently remove loose soil and debris, but do not scrub or shred the moss. If it is dry, dampen it with clean water so it is flexible. Do not use moss that has been treated with chemicals, and do not take large mats from wild habitats. Small pieces placed thoughtfully are easier to establish and leave more of the source patch intact.
- Place moss in the joints. Set pieces into the gap with their green side facing up. Fit them snugly between the pavers, then press them gently with gloved fingers or a blunt tool so the underside contacts the surface. Avoid packing the gap tightly with moss or piling it above the paver level. If the joints are narrow, use smaller pieces rather than forcing a thick clump into them.
- Water gently and keep the area damp. Mist or sprinkle the new growth until it is evenly moist, not flooded. During dry weather, check it regularly and water when the moss begins to dry. A gentle spray is less likely to dislodge pieces than a strong hose stream. Once established, moss may need less attention in a naturally damp, shaded location, but it can dry out during hot or windy spells.
- Limit disturbance while it settles. Keep people, pets, brooms, and garden tools off the new patches as much as practical. Do not rake or power-wash the joints. Watch for pieces shifting after rain or being pulled up by birds; gently press displaced moss back into place if it is still healthy. Establishment takes time and depends on local conditions, so avoid judging the result after only a brief period.
- Maintain the conditions rather than forcing growth. Clear fallen leaves before they smother the moss, remove weeds by hand, and use gentle watering when the surface dries. If sunlight is intense, nearby planting or a shade structure may help only if it is suitable for the space and does not block drainage or damage paving. Do not apply fertilizer, lawn products, or chemical moss treatments to encourage growth; they can harm the moss or nearby plants.
Common Mistakes
Choosing a sunny, dry joint. Moss generally does better in shade and with regular moisture. A hot, exposed path is unlikely to support a lasting green cover, even with frequent watering. Choose another planting approach for that location rather than repeatedly soaking the paving.
Using a high-pressure hose. Strong water can wash away small pieces, loosen joint material, or push debris into gaps. Use a watering can with a gentle rose or a light spray instead.
Planting over unstable or poorly drained joints. Moss cannot correct a wobbly paver or a drainage problem. Repair the underlying issue first, and do not use moss to conceal a hazard.
Overfilling the gaps. Thick clumps may lift, dry unevenly, or spill over the walking surface. Fit thin pieces level with the paver tops and leave joints that are too deep or wide for moss properly stabilized.
Expecting a uniform carpet right away. Moss spreads at its own pace and may establish unevenly. Small patches, changing light, weather, and the kind of moss all affect the result. A natural, irregular pattern is more realistic than a perfectly even fill.
Tips
- Test a small, low-traffic section before treating the whole path. It shows whether the site stays damp enough and whether the moss holds in the joints.
- Use moss from a spot with similar light and moisture. A moss that thrives on a shaded wall may not suit a joint that dries in afternoon sun.
- Keep leaf litter from forming a thick blanket. A light scattering may not be a problem, but a dense layer blocks light and can smother small patches.
- Water early enough for excess moisture to drain before evening in cool, damp weather. The aim is moist moss, not a persistently saturated path.
- Maintain a clear walking surface. Trim or remove growth that creeps onto paver tops where it could become slick, especially near entrances and steps.
Troubleshooting
The moss turns brown or feels crisp. It may have dried out, although some moss can look dull when dry and revive after moisture returns. Water gently and reassess the location. If the area repeatedly dries soon after watering, it may be too exposed for moss. Do not keep the surface waterlogged in an attempt to compensate.
The pieces wash out after rain. Check whether water runs quickly across the path or down a slope. Re-seat only healthy pieces, reduce strong runoff if you can do so safely, and stabilize loose joints. A spot where water regularly rushes through is not a good place for loose moss transplants.
Weeds keep appearing. Remove small weeds by hand before they root deeply. Clear seeds and debris from the joints, but work gently around established moss. If weeds return because the joints are loose or open, address that condition instead of applying herbicide around the moss.
The moss is growing on the pavers, not between them. It may be spreading from the joints onto a damp surface. Brush or lift unwanted growth carefully, and keep the paver tops clear where people walk. If the whole path becomes slick, remove the moss and reconsider whether it is appropriate for that area.
Nothing seems to be establishing. Revisit shade, moisture, drainage, traffic, and contact with the surface. Try a small test with moss from a suitable source in a more sheltered joint. If the path is sunny, frequently walked, or dries rapidly, the conditions may simply not support moss.
Frequently Asked Questions
Can I grow moss between pavers without transplanting it?
Yes. Clean the joints, keep them suitably moist, and allow nearby moss to spread naturally. This can take longer and may not work if no moss grows nearby or the site is too sunny and dry.
Does moss need soil between pavers?
Not necessarily. Moss can attach to a firm surface, and it does not need a deep layer of soil. A thin amount of fine growing medium may help a shallow, bare joint hold moisture, but loose material in a deep gap can wash away.
How often should I water new moss?
There is no fixed schedule because shade, rainfall, wind, and soil conditions vary. Check the patches during dry weather and water gently when they begin to dry. Reduce watering when rain keeps them moist.
Can moss grow between pavers in full sun?
Some moss may tolerate brighter conditions, but hot, dry exposure makes establishment difficult. A shaded, moisture-retaining spot is generally a better choice. Test a small area before doing more.
Is moss between pavers slippery?
It can be slippery when wet, particularly if it spreads across the paver tops. Avoid it on steps, ramps, and busy walkways where a slip could cause injury. Keep frequently used surfaces clean and dry enough for safe footing.
Can I use moss from the woods?
Do not collect from protected land or private property without permission. Prefer small amounts from your own property or a permitted source, and avoid stripping large patches from natural habitats.